diff --git a/apps/riak_cs/src/riak_cs_sts.erl b/apps/riak_cs/src/riak_cs_sts.erl
index 66037c1c3..bfd80cd1c 100644
--- a/apps/riak_cs/src/riak_cs_sts.erl
+++ b/apps/riak_cs/src/riak_cs_sts.erl
@@ -238,7 +238,7 @@ check_with_saml_provider(#{pbc := Pbc,
         {ok, SP = ?IAM_SAML_PROVIDER{name = SAMLProviderName}} ->
             State#{status => validate_assertion(ResponseDoc, SP, RequestId),
                    saml_provider_name => SAMLProviderName};
-        {error, not_found} ->
+        {error, notfound} ->
             State#{status => {error, no_such_saml_provider}}
     end.